题目

Hello, boys and girls. I’m Miss Baker. I will introduce a great summer course to you. It’s for the students who are interested in computer games. But you won’t be playing computer games. You will learn how to design them.You will get the opportunity to learn from two famous computer game designers. They are Sam Gates and Daniel Stone from the company Starry Games. You will learn how to use different computer programs and create computer games by yourself.As for the length of the course, this year the course is from August 14 to August 20. Students who are taking the course will stay at a杂合体高茎豌豆自交，后代中有12株为高茎，第13棵为矮茎的可能性是A. 0 B. 25％ C. 75 ％ D. 100％